Device for collecting air containing nitrogen oxides

Abstract

The utility model relates to the technical field of air collecting devices, and discloses a nitrogen oxide-containing air collecting device which comprises a box body, and a self-priming pump is fixedly mounted in the box body; the output end of the self-priming pump is fixedly communicated with an exhaust pipe, and one end of the exhaust pipe penetrates into the box body, extends out of the box body and is fixedly communicated with a sample storage container arranged outside the box body; the input end of the self-priming pump is fixedly communicated with an air inlet pipe, and one end of the air inlet pipe is fixedly communicated with a connecting pipe seat; the nitrogen oxide-containing air collecting device can filter dust in the air, so that particulate matters, dust and other pollutants in the air are effectively blocked, the purity of a collected air sample is ensured, the pollution of the sample is avoided, the influence of nitrogen oxide possibly contained or adsorbed in the particulate matters on a measurement result is reduced, and the measurement accuracy is improved. And the measurement value is prevented from being too high or too low.

Description

Technical Field

[0001] This utility model relates to the field of air collection device technology, specifically an air collection device containing nitrogen oxides. Background Technology

[0002] In order to effectively protect the environment and public health, monitoring various pollutants in the environment has become increasingly important, thus requiring air collection devices;

[0003] Currently, air collection devices do not have a filtration function, which means that particulate matter, dust and other pollutants in the air will directly enter the collection system, potentially contaminating the sample. Moreover, particulate matter may contain or adsorb nitrogen oxides, leading to measurement results that are too high or too low, affecting subsequent detection and the accuracy of the data. Therefore, we propose an air collection device containing nitrogen oxides to solve the above-mentioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an air collection device containing nitrogen oxides. This solves the problem that air collection devices without filtration functions mean that particulate matter, dust, and other pollutants in the air will directly enter the collection system, potentially contaminating the sample. Furthermore, particulate matter may contain or adsorb nitrogen oxides, leading to measurement results that are too high or too low, affecting subsequent detection and the accuracy of the data.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an air collection device containing nitrogen oxides, comprising a housing, wherein a self-priming pump is fixedly installed inside the housing;

[0006] The output end of the self-priming pump is fixedly connected to an exhaust pipe. One end of the exhaust pipe passes through the inside of the box and extends to the outside of the box, and is connected and fixed to a sample storage container located outside the box.

[0007] The input end of the self-priming pump is fixedly connected to an air inlet pipe, and one end of the air inlet pipe is fixedly connected to a connecting pipe socket.

[0008] An air inlet cylinder is threaded to the top of the outer side of the connecting pipe seat, and multiple sets of air inlet holes are opened on the surface of the air inlet cylinder.

[0009] A filter cylinder is fitted around the outside of the air intake cylinder.

[0010] Preferably, a support plate is fixedly installed inside the housing, and the support plate is fixedly connected to the housing through mounting holes and connecting pipe seats.

[0011] Preferably, a rotating disk is rotatably connected to the upper surface of the support plate via a bearing, an mounting ring is fixed to the upper surface of the rotating disk, a threaded groove is provided on the inner sidewall of the mounting ring, one end of the filter cylinder is connected to the inner sidewall of the mounting ring via a threaded connection, the top of the filter cylinder is sealed, and a set of circular grooves are provided on the upper surface of the rotating disk.

[0012] Preferably, the surface of the exhaust pipe is fixedly connected to a gas distribution pipe with a closed top structure. One end of the gas distribution pipe passes through the support plate and extends to the top of the support plate. An exhaust hole is opened on the surface of the gas distribution pipe near the filter cartridge.

[0013] Preferably, the support plate is equipped with a drive rotation mechanism for driving the filter cylinder to rotate. The drive rotation mechanism includes a motor fixed on the lower surface of the support plate and a gear fixed on the output end of the motor. The outer surface of the rotating disk is fixed with a gear disk that meshes with the gear. The output shaft of the motor is rotatably connected to the support plate through a bearing.

[0014] Preferably, the top of the box is provided with a protective cover, and multiple sets of buckles are fixedly installed on the sides of the protective cover. The surface of the box is fixed with elastic buckles corresponding to the buckles. The elastic buckles are fastened to the buckles to lock the connection between the box and the protective cover.

[0015] Beneficial effects

[0016] This invention provides an air collection device containing nitrogen oxides. Compared with the prior art, it has the following advantages:

[0017] This air collection device containing nitrogen oxides can filter dust from the air, thereby effectively blocking particulate matter, dust and other pollutants in the air, ensuring the purity of the collected air samples, avoiding sample contamination, reducing the impact of nitrogen oxides that may be contained or adsorbed in particulate matter on the measurement results, and avoiding the measurement values ​​being too high or too low. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a partial sectional view of the air inlet and filter cylinder structure of this utility model;

[0021] Figure 4 This is a schematic diagram showing the separation of the housing and protective cover of this utility model.

[0022] In the diagram: 101, housing; 102, self-priming pump; 103, air inlet pipe; 104, exhaust pipe; 105, sample storage container; 106, support plate; 107, connecting pipe seat; 108, air inlet cylinder; 109, filter cylinder; 110, rotating disk; 111, mounting ring; 112, circular groove; 113, air distribution pipe; 114, protective cover; 115, elbow; 116, elastic buckle; 2, drive rotation mechanism; 201, motor; 202, gear; 203, gear plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-4 As shown:

[0025] An air collection device containing nitrogen oxides includes a housing 101, and a self-priming pump 102 is fixedly installed inside the housing 101.

[0026] The output end of the self-priming pump 102 is fixedly connected to the exhaust pipe 104. One end of the exhaust pipe 104 passes through the inside of the box 101 and extends to the outside of the box 101, and is connected and fixed to the sample storage container 105 located outside the box 101.

[0027] The input end of the self-priming pump 102 is fixedly connected to the air inlet pipe 103, and one end of the air inlet pipe 103 is fixedly connected to the connecting pipe seat 107.

[0028] An air inlet cylinder 108 is threadedly connected to the top of the outer side of the connecting pipe seat 107, and multiple sets of air inlet holes are opened on the surface of the air inlet cylinder 108.

[0029] A filter cartridge 109 is fitted around the outside of the air intake cylinder 108;

[0030] A support plate 106 is fixedly installed inside the housing 101. The support plate 106 is fixedly connected to the connecting pipe seat 107 through the opening of the mounting hole. A rotating disk 110 is rotatably connected to the upper surface of the support plate 106 through the bearing. An installation ring 111 is fixed on the upper surface of the rotating disk 110. A threaded groove is opened on the inner side wall of the installation ring 111. One end of the filter cylinder 109 is connected to the inner side wall of the installation ring 111 through the provided thread. The top of the filter cylinder 109 is in a sealed state. A set of circular grooves 112 are opened on the upper surface of the rotating disk 110.

[0031] In this embodiment: When using the air collection device containing nitrogen oxides, the self-priming pump 102 is connected to an external power source to power the self-priming pump 102. By starting the self-priming pump 102, a partial vacuum can be formed inside the self-priming pump 102. Using atmospheric pressure, external gas is drawn into the self-priming pump 102 through the air inlet of the air inlet cylinder 108, along the connecting pipe seat 107 and the air inlet pipe 103, and discharged through the exhaust pipe 104 into the sample storage container 105 to collect the air.

[0032] During this process, a filter cartridge 109 is provided on the outside of the air inlet 108. The filter cartridge 109 can filter dust in the air, thereby effectively blocking particulate matter, dust and other pollutants in the air, ensuring the purity of the collected air sample, avoiding sample contamination, reducing the influence of nitrogen oxides that may be contained or adsorbed in the particulate matter on the measurement results, and avoiding the measurement values ​​being too high or too low.

[0033] One end of the filter cartridge 109 is threaded onto the mounting ring 111, which facilitates the disassembly and assembly of the filter cartridge 109 and the mounting ring 111.

[0034] Meanwhile, a circular groove 112 is provided on the upper surface of the rotating disk 110. A rod (not shown in the figure) can be inserted into the circular groove 112. By holding the rod, the rotating disk 110 can be fixed in hand, making it convenient to screw the filter cylinder 109 onto the mounting ring 111 on the upper surface of the rotating disk 110. This avoids the problem that the rotating disk 110 is inconvenient to hold due to its large diameter.

[0035] Furthermore;

[0036] In an optional embodiment, the surface of the exhaust pipe 104 is fixedly connected to a gas distribution pipe 113 with a closed top structure. One end of the gas distribution pipe 113 passes through the support plate 106 and extends to the top of the support plate 106. An exhaust hole is provided on the surface of the gas distribution pipe 113 near the filter cartridge 109.

[0037] A drive rotation mechanism 2 for driving the filter cartridge 109 to rotate is installed on the support plate 106. The drive rotation mechanism 2 includes a motor 201 fixed on the lower surface of the support plate 106 and a gear 202 fixed on the output end of the motor 201. A gear disk 203 that meshes with the gear 202 is fixed on the outer surface of the rotating disk 110. The output shaft of the motor 201 is rotatably connected to the support plate 106 through a bearing.

[0038] In this embodiment: part of the gas inside the exhaust pipe 104 is delivered to the air distribution pipe 113 and discharged through the exhaust hole opened in the air distribution pipe 113 to the surface of the filter cartridge 109. The airflow blown out blows onto the surface of the filter cartridge 109, which can blow away some of the dust attached to the surface of the filter cartridge 109, reduce the adhesion of dust, and improve the air circulation effect.

[0039] Simultaneously, the motor 201 is started, which drives the gear 202 to rotate. The gear 202 meshes with the gear disc 203, which in turn drives the gear disc 203 to rotate. The rotation of the gear disc 203 drives the rotating disk 110 to rotate, which in turn drives the filter cartridge 109 to rotate. As a result, the gas discharged from the air distribution pipe 113 is evenly distributed to the surface of the filter cartridge 109, making the dust blown off the surface of the filter cartridge 109 more comprehensive, improving the effectiveness of the device and meeting the actual use requirements.

[0040] Furthermore;

[0041] In an optional embodiment, a protective cover 114 is provided on the top of the housing 101, and multiple sets of buckles 115 are fixedly installed on the sides of the protective cover 114. An elastic buckle 116 corresponding to the buckle 115 is fixed on the surface of the housing 101. The elastic buckle 116 is fastened on the buckle 115 to lock the connection between the housing 101 and the protective cover 114.

[0042] In this embodiment: a protective cover 114 is provided on the top of the housing 101, and an elastic buckle 116 is fastened to the buckle 115 to lock the connection between the protective cover 114 and the housing 101. With the protective cover 114, the filter cartridge 109 and other components can be covered and protected when the device is not in use.

[0043] The working principle and usage process of this utility model are as follows: When using the air collection device containing nitrogen oxides, the protective cover 114 and the housing 101 are not installed. The self-priming pump 102 is connected to an external power source to supply power to it. By starting the self-priming pump 102, a partial vacuum is formed inside it. Using atmospheric pressure, external air is drawn into the self-priming pump 102 through the air inlet of the air inlet cylinder 108, along the connecting pipe seat 107 and the air inlet pipe 103, and discharged through the exhaust pipe 104 into the sample storage container 105 to collect the air. A filter cylinder 109 is provided on the outside of the air inlet cylinder 108 to filter dust from the air. Part of the gas inside the exhaust pipe 104 is delivered to the gas distribution pipe 113. The airflow is expelled through the exhaust port of the air distribution pipe 113 and discharged onto the surface of the filter cartridge 109. The airflow blown onto the surface of the filter cartridge 109 can blow away some of the dust attached to the surface of the filter cartridge 109, reducing dust adhesion and improving air circulation. At the same time, the motor 201 is started, which drives the gear 202 to rotate. The gear 202 meshes with the gear disk 203, which in turn drives the gear disk 203 to rotate. The rotation of the gear disk 203 drives the rotating disk 110 to rotate, which in turn drives the filter cartridge 109 to rotate. Thus, the air discharged from the air distribution pipe 113 is evenly distributed onto the surface of the filter cartridge 109, making the dust blown away from the surface of the filter cartridge 109 more comprehensive, improving the effectiveness of the device and meeting practical needs.

[0044] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. An air collection device containing nitrogen oxides, comprising a housing (101), characterized in that: A self-priming pump (102) is fixedly installed inside the housing (101); The output end of the self-priming pump (102) is fixedly connected to an exhaust pipe (104). One end of the exhaust pipe (104) penetrates into the interior of the box (101) and extends to the exterior of the box (101), and is connected and fixed to a sample storage container (105) located outside the box (101). The input end of the self-priming pump (102) is fixedly connected to an air inlet pipe (103), and one end of the air inlet pipe (103) is fixedly connected to a connecting pipe seat (107). The outer top of the connecting pipe seat (107) is threaded with an air inlet cylinder (108), and the surface of the air inlet cylinder (108) is provided with multiple sets of air inlet holes. The air intake cylinder (108) is fitted with a filter cylinder (109).

2. The air collection device containing nitrogen oxides according to claim 1, characterized in that: A support plate (106) is fixedly installed inside the housing (101), and the support plate (106) is fixedly connected to the mounting hole and the connecting pipe seat (107).

3. The air collection device containing nitrogen oxides according to claim 2, characterized in that: The upper surface of the support plate (106) is rotatably connected to a rotating disk (110) via a bearing. An mounting ring (111) is fixed on the upper surface of the rotating disk (110). A threaded groove is provided on the inner side wall of the mounting ring (111). One end of the filter cylinder (109) is connected to the inner side wall of the mounting ring (111) via a threaded connection. The top of the filter cylinder (109) is sealed. A set of circular grooves (112) is provided on the upper surface of the rotating disk (110).

4. The air collection device containing nitrogen oxides according to claim 2, characterized in that: The surface of the exhaust pipe (104) is fixedly connected to a gas distribution pipe (113) with a closed top structure. One end of the gas distribution pipe (113) passes through the support plate (106) and extends to the top of the support plate (106). An exhaust hole is provided on the surface of the gas distribution pipe (113) near the filter cylinder (109).

5. The air collection device containing nitrogen oxides according to claim 3, characterized in that: The support plate (106) is equipped with a drive rotation mechanism (2) for driving the filter cylinder (109) to rotate. The drive rotation mechanism (2) includes a motor (201) fixed on the lower surface of the support plate (106) and a gear (202) fixed on the output end of the motor (201). The outer surface of the rotating disk (110) is fixed with a gear disk (203) that meshes with the gear (202). The output shaft of the motor (201) is rotatably connected to the support plate (106) through a bearing.

6. The air collection device containing nitrogen oxides according to claim 1, characterized in that: The top of the box (101) is provided with a protective cover (114), and multiple sets of sides of the protective cover (114) are fixedly installed with buckles (115). The surface of the box (101) is fixed with elastic buckles (116) corresponding to the buckles (115). The elastic buckles (116) are fastened on the buckles (115) to lock the connection between the box (101) and the protective cover (114).

Images